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COMPARATIVE ASSESSMENT OF THE EFFECT OF WASTE DUMP SITES ON RIVER NWORIE WATER QUALITY, NIGERIA
Table 1 - Present Physicochemical laboratory result of Nworie river
S/N | Parameter | W.H.O Standard | Upstream (Station 1) | Midstream (Station 2) | Downstream (Station 3) | Mean value |
1 | Temperature, °(C) | 20-30 | 28,6 | 29,2 | 29,0 | 28,9 |
2 | Ph | 6,5-8,5 | 5,8 | 5,8 | 5,2 | 5,6 |
3 | Conductivity, (µs/cm) | 100 | 54 | 87 | 105 | 82 |
4 | Turbidity, (NTU) | 5 | 119,2 | 390,4 | 210,8 | 240,13 |
5 | Dissolved Oxygen (mg/L) | ≥4.0 | 6,4 | 6,1 | 5,7 | 6,06 |
6 | Total Dissolved Solids (mg/L) | 250 | 35,10 | 56,55 | 68,25 | 53,3 |
7 | Total Suspended Solids (mg/L) | 50 | 12 | 27 | 20 | 19,6 |
8 | BOD (mg/L) | 30 | 0,27 | 0,48 | 0,30 | 0,5 |
9 | COD (mg/L) | 15 | 1,152 | 0,76 | 0,48 | 0,8 |
10 | Nitrate (mg/L) | 40 | 53,4 | 81,6 | 62,8 | 65,93 |
11 | Sulphate (mg/L) | 100 | 10 | 15 | 5 | 10 |
12 | Phosphate (mg/L) | 5 | 11,3 | 42,0 | 10,8 | 21,36 |
13 | Silica (mg/L) | - | 1,37 | 0,88 | 0,78 | 1,01 |
14 | Iron (mg/L) | 0,3 | 0,32 | 0,66 | 0,42 | 0,46 |
15 | Total Chlorine (mg/L) | 0,2-0,25 | 0,16 | 0,26 | 0,18 | 0,2 |
16 | Free CO2 | 25 | 7,25 | 5,00 | 5,00 | 5,75 |